@misc{indiciaea3216550fc68,
  title = {Groundwater residence times in Shenandoah National Park, Blue Ridge Mountains, Virginia, USA: A multi-tracer approach},
  author = {Niel Plummer and E. Busenberg and J.K. Böhlke and D.L. Nelms and R. L. Michel and P. Schlosser},
  year = {2001},
  doi = {10.1016/s0009-2541(01)00317-5},
  url = {https://pubs.usgs.gov/publication/70023721},
  note = {Source identifier: 70023721}
}